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A protective film and anti-radiation technology, applied in optics, optical components, instruments, etc., can solve problems such as poor anti-radiation and anti-static effects, affecting service life, and spacecraft failures
Inactive Publication Date: 2005-03-23
HARBIN INST OF TECH
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Problems solved by technology
Discharge pulses cause spacecraft failure when coupled into electronic systems
Therefore, a protective film with good conductivity and high spectral transmittance is need
Method used
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specific Embodiment approach 1
[0004] Specific embodiment one: the raw material composition of this embodiment comprises dehydrated alcohol, acetylacetone, formamide and hydrochloric acid, also comprises In(NO 3 ) 3 , SnCl 4 , Ce(NO 3 ) 3 and LaCl 3 , the above ingredients are calculated in parts by weight: 1 to 4 parts of absolute ethanol, 2 to 6 parts of acetylacetone, 0.02 to 1 part of formamide, 0.01 to 3 parts of hydrochloric acid, In(NO 3 ) 3 0.0001~0.001 parts, SnCl 4 0.00001~0.0004 parts, Ce(NO 3 ) 3 0.0002~0.004 parts, LaCl 3 0.0003 to 0.005 parts. The preparation process of the protective film of the present invention is as follows: according to the above ratio, In(NO 3 ) 3 Dissolve in acetylacetone solution under 60℃ water bath, this solution is called A; SnCl 4 Dissolved in absolute ethanol solution, this solution is called B; Ce(NO 3 ) 3 Dissolved in hydrochloric acid solution, this solution is called C; LaCl 3 Soluble in formamide solution, this solution is called D; mix solutio...
specific Embodiment approach 2
[0006] Specific embodiment two: the components of this embodiment are counted in parts by weight: 2 parts of absolute ethanol, 3 parts of acetylacetone, 0.05 part of formamide, 1 part of hydrochloric acid, In(NO 3 ) 3 0.0004 parts, SnCl 4 0.0001 part, Ce(NO 3 ) 3 0.0008 parts, LaCl 3 0.0008 copies.
specific Embodiment approach 3
[0007] Specific embodiment three: the components of this embodiment are counted in parts by weight: 3 parts of absolute ethanol, 5 parts of acetylacetone, 0.08 part of formamide, 2 parts of hydrochloric acid, In(NO 3 ) 3 0.0008 parts, SnCl 4 0.0003 parts, Ce(NO 3 ) 3 0.003 parts, LaCl 3 0.003 copies.
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Abstract
The invention discloses an anti radiation conductive optic protection film, it relates to a protective film which is used on the surface of optical parts of an apparatus. The current protective film will reduce spectrum transmissibility after being radiated in air for a long time, and when spacecraft meets magnetosphere breaking out environment, the surface is charged, when discharge pulse is coupling into electronic system, spacecraft can be wrong. The invention calculates each elements by weight share: absolute ethyl alcohol 1-4 shares, acetylacetone 2-6 shares, formamide 0.02-1 shares, hydrochloric acid 0.01-3 shares, In (NO3)3 0.0001-0.001 shares, SnCl4 0.00001-0.0004 shares, Ce(NO3)3 0.0002-0.004 shares, LaCl3 0.0003-0.005 shares. The invention uses Ce, La, Sn, In characters to produce multielement oxide composite membrane, it has great stability of electric and optic characters, the spectrum transmissibility of visible and near far red area can reach more than 92%.
Description
Technical field: [0001] The invention relates to a protective film used on the surface of an optical device. Background technique: [0002] Optical systems are important payloads of spacecraft. Under the action of space environmental factors, the surface performance of optical devices will degrade, which will lead to a significant decline in the performance of the entire system. Therefore, active protection of optical surfaces is one of the important ways to improve the reliability and life of spacecraft. At present, SiO2 is mostly used at home and abroad 2 , MgF 2 , LiF and other crystal thin films are used as protective films for space optical surfaces. The advantages of these thin films are that they have good spectral transmission performance and play a good role in protecting optical surfaces. However, after long-term exposure to the space radiation environment, these films will be colored, and the spectral transmittance will decrease significantly. In addition, ma...
Claims
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